William h



w. II. DAI/Is AND If. 5.1085'.

vTALKINCIIVIACHINE.

APPLICATION FILED I LILY 13.1918.

Patented Aug. 12, 1919,

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WILLIAM H. DAVIS, VOQE BRONXVILLE, AND FREDRICK E. J OSS, OF BROOKLYN, NEW YORK, `.ASSIGNORS TO LEKTOPHONE CORPORATION, A. CORPORATION OF DELA- WARE.

TALKING-MACHINE.

To all whom t may concern.'

'Be it vknown that we, VILLIAM H. D'Avrs and IFREDRICK E. Joss, both citizens of the United States, residing at, respectively,

vBronxville, county of Westchester, `State of New York, and borough of Brooklyn, county of Kings, city and State of New Yo'rln'have `invented certain new vand useful Improve.

ments'in Talking-Marmines; and we do here-v by declare the following to -bea full,clear, and eiract description of the'invention,"such as will enable others skilled' in the art to which it appertains to make and use 'the same.

The present invention. has reference to talking machinesand more particularly to machines of the general type disclosed in U. S. Letters Patent to Marcus C. Hopkins, No. 1,271,527, of July 2,1918.

ln machines of the type specified, the vibrations of. the stylus, during itstravel along a phonic line, are transmittedto a conicaldiaphragm of large area, freely supported in unconfined air, in a mannerto move the entire conical portion of the diaphragm bodily.A The diaphragm is connected to the rear endv cfa supporting lbar, which is mounted to move across the record or its equivalent and whichcarries a transmission-device that comprises a rod or wire extending from'the stylus holder to the center of the diaphragm.

The connection between the supporting bar and the diaphragm i's-usually of a rigidcharacter, sothat the two-move in unison both during the horizontal swinging movement ofthe bar across the recordand during its vertical swinging or rocking` movements,- .the latter movements occurring when, the stylus passes over unevenportions of the record l ving, ln consequence, space and when the bar is raised for the purpose of changing the stylus.

enough must be provided within the cabinet to enable these movements to take place freely; and since the diaphragm is of quite large size, as previously stated, practically the entire rear portion of the cabinet is re- A i quiredfor that purpose.V 'It follows, thereother adjuncts cannot be disposed. at. the` fore, that the brake adjusting devices and rear 'of the turn-table, as is usually the case, but must all be located injthe front portion ofthe cabinet, which may possibly entail some material changes in their construction.

It is theobject ofthis invention'to jm v specicatin of'retters Patent. Patented Aug. 12, -1919. Application filed July 13, 1918. Serial No. 244,691. I i `l provel the arrangement just described by providing a connection between the diaphragm and the vibration transmission device which is of such a character as to enable a stationary mounting of the diaphragm while at the sam'e time permitting the supporting bar to lmake all of the movements previously mensov tioned, besidesfbeing capable of' ,an additional, rotary movement in either direction vabout its'longitudinal axis fon the purpose of playing both `vertically and laterally cut records .v l

According to thefembodiment of the invention herein disclosed,.the supportingbar has a universal' mounting, which enables it to move as above indicated and which' is lpreferably connected to the diaphragm tohold it in fixed position; and a universal con nection is provided between the transmission rod and the diaphragm to permit the Lformer to move in unison with the bar but relatively to the said diaphragm. The invention is not limited, however, ,to the precise details of the' construction whereby the object stated is'accomplished, as 'embodied in the present disclosure, excepting' ineso far asmay necessarily result from the rphraseology ofthe appended. claims.`

The accompanying drawingillustrates oneform" which the-invention may take in prac-l tice, and therein:

Figure l is a side elevation, partly in section, showing the improved arrangement of parts.

Fig, 3 is a vertical section on line` f'l-S, Fig. .1. j Referring more particularly to said draw- 5 indicates generally the supporting bar of a Hopkins-type machine, and 6 the record-carrier' or turn-table across .which it is arranged to move, the latter element being 2 is an enlargedv horizontal section on' line-.2.2, Fig. "1; and

mounted above -the deck 7 of the machine and driven from a motor (not shown)Y in any desiredmanner. The bar' 5 is'rotatably fitted at its rear end .in a supporting sleeve 8,

from a bracket 9, iXed to yan extension of the deck- 7i .or to. some other stationary' l part of which is itself supported by a gimbal joint 10 Aand 111 provided with bearing members 12 and f3,'whichjrespeotive1y engage the l movement of said bar, so that in one position the parts will be set for playing laterally cut records, and in the other position for playing vertically cut records,'such means preferably embodying a quadrant slot 14 in which a pin-15 is arranged to travel. In the present instance, the slotis formed in the bar, lwhile the pin is secured to the bearing sleeve 8, as shown in F ig. 3.` The adjustment of the supporting bar froinone playing position to the other involves an independent adjustment of the stylus holder 16, constituting one element of the vibration transmission device, the other element of which, as usual in machines of the type disclosed, is in the nature of a rod or wire 17 extending from the holder to the diaphragm 18. This independent adjustment of the stylus holder necessitated by reason of the fact that when f the bar is rotated from one of its two Pleying positions tothe other, the stylus holder moves with it, so that said holder must therefore be moved backward .to bring the stylus into record-engaging position.

The stationary outer gimba'l'ring 10 forms the hub of a spider which -is utilized to support the diaphragm in fixed position, the arms 19 of the spider beingv fastened at'their inner ends to the hub orring 10 and having their outer ends connected by short, horizontal spaced bars 2O to the diaphragm carrier 21. The carrier comprises a pair of co-a'ct' ing rings whichv securely clamp between them a peripheral flange or supporting rim (not shown) formed on the diaphragm. The latter has the size and other characteristic features ,described in the above-identied Hopkins application, to which reference may be had, it being considered sufficient for all present4 purposes to state thatsaid` diaphragm comprises, in addition, to its rim, a conical body portion of light, vibratile material which is vibrated bodily piston-fashion and is thereby enabled to produce self-sustaining sound lwaves of the same intensity -as the original sound waves, so that it takes the placenot only of the usual small soundbox, but also ofthe accompanying horn or otherarnplifler of like character.

The joint between the rear end of the transmission rod 17 and the diaphragm cooperates with the gimbaljoint to maintain the diaphragm stationary during the movements of the supporting bar v5, as has previously been stated, and preferably consists ofa spherical element or ball and a socket toreceive the same, one of said ele-V mentsbeing secured to the rod end and the other to a metallic cap 22' aliixed to the centhe shape of the cap depending, therefore, upon that of the cone, and the rod being disposed, in any case, in line with the axis of the cone. .1n the construction illustrated, the ball 23 is fastened tothe aforesaid rod end, while the socket 24 is carried by the cap 22 and consists ofa body 25 and a sleeve or guard 26, the latter member being curved somewhat at its free outer edge to fit the ball and holdr it in the conical seat or recess 27 formed in said body. The two parts 25 and 26 are fastened" together by means of small screws or bolts 28 which jare passed through mating openings in 'their outstanding, circumferential fianges 29 and 30, as clearly disclosed in Fig. 2; and the part 25 is attached to the said cap 22 by a bolt 31, the cap having a forwardly-extending axial neck 32 which abuts against said part and through which said bolt passes.

The sleeve or' guard 26 fits overthe ball sufficiently tight to prevent relative bodily movement between said parts, but has enough resilience orfgive7 to avoid interfering in any way with the turning or ro-y tation of the ball produced by the movements of the supporting bar, as'will be understood.

We claim as our invention:

1. In a talking machine, the combination of a stationary diaphragm of large area; a

supporting bar extending toward the center ment relative to saiddiaphragrn in both vertical andhorizontal planes, and forrotary movement in either direction about its axis; a vibration transmission device carried by said bar and provided at one end with astylus holder; and a universal .coupling between the other end of said transmission device and said diaphragm..

3. In a talking'machine, the combination of-a stationary diaphragm of large area; supporting means therefor; a supporting bar extending toward the center of the diaphragm and movable relatively to said dia.- phragm; a stylus holder-'mounted on the front end of the bar; a transmission element carried by said bar and connected at one end with said holder; and a universal couiso ` phragm.

4. In a talking machine, the v combination of a stationary diaphragm of large area; a tubular supporting bar extending toward the` center of the diaphragm and movable relatively to said diaphragm, said bar being provided at its front end with a stylus.

holder; a transmission element disposed longitudinally of and within said bar and connected at one end with said holder; and a universal coupling between the other end of said vtransmission'element and said diaphragm.

5. In a talking machine, the combination of a tubular supporting bar provided at its front end with a stylus holder a universal mounting for said bar to enable the same to swing in bothvertical and horizontal planes, said mounting including'a sleeve wherein therear end of said bar is rotatably tted Ito permit said bar to be turned in either d i- -rection about its axis; a diaphragm located adjacentthe'rear end of said bar; means :for supporting the diaphragm in fixed position; a transmission element disposed longitudinally of and within said. bar and connected at its front end'with said holder; and a universal connection between thev rear end of said transmission element and sa'i'd diaphragm. t Y .4

Intestimony whereof we afiixyour signatures. wILLiAMH. DAVIS. FREDRICK E. Joss. 

